Unofficial hardware

=Displays=
 * Adafruit PiTFT Touchscreen 2.8" Configuration notes for PiTFT
 * PiTFT clone versions
 * OzzMaker PiScreen 2
 * WaveShare Displays with GPIO touch-device
 * Official Raspberry Pi Foundation 7" Touch-screen Display
 * https://www.raspberrypi.org/products/raspberry-pi-touch-display/
 * USA https://www.mcmelectronics.com/product/83-16872
 * Generic HDMI Displays with USB mouse-like touch-device

=Audio interfaces= The Zynthian SD image won’t work without a proper audio device (DAC). The RBPi integrated “audio device” is not suitable (as it has poor performance). The SD image is pre-configured to work with HifiBerry DAC+, although you can use any DAC that works with RBPi (i.e. any I2S device). See Configuring Audio Devices

Tested good

 * HifiBerry
 * HifiBerry DAC+ => hifiberry-dacplus
 * Hifiberry DAC+ Pro => hifiberry-dacplus
 * HifiBerry DAC+ Lite => hifiberry-dac
 * HifiBerry Amp => hifiberry-amp
 * HifiBerry Digi => hifiberry-digi
 * IQAudio
 * IQAudio DAC+ => iqaudio-dacplus
 * AudioInjector
 * AudioInjector Hat => audioinjector-wm8731-audio has Audio Input But be warned that audioinjector soundcards seem quite problematic. IMHO, the 40 pin header is not very reliable

Tested - with problems

 * PiSound https://blokas.io/ PiSound itself works. but currently there are GPIO conflicts with current encoders. has Audio Input also has 5pin MIDI In and MIDI OUT
 * USB audio interfaces (latency problems) has Audio Input

Tested bad

 * Built-in Raspberry 1/8" audio jack. The onboard RBPi soundcard is not suitable at all. It's PWM based (no DAC!) and only 10 bits of resolution. Also, it has a huge latency. Forget getting a decent result with it. You have to use a decent soundcard (with a DAC!) for RBPi.

Untested

 * Sparkfun JustBoom HAT
 * Built-in Raspberry HDMI audio
 * IQAudio
 * IQAudio Pi-DACZero
 * Durio sound http://www.gravitech.us/dusoulsoqufo.html
 * ALLO – PIANO HI-FI DAC https://volumio.org/product/allo-piano-hi-fi-dac/
 * https://volumio.org/product-category/dac/i2s-dac/
 * Mamboberry https://www.collybia.com/product/mamboberry-ls-dac/
 * Chinese I2C
 * Board Mikroe-506 Proto Audio Codec WM8731 https://aliexpress.com/item/Module-BOARD-MIKROE-506-PROTO-AUDIO-CODEC-WM8731-development-BOARD/32759758896.html?spm=a2g03.10010108.1000016.1.3c744047A0NIyA&isOrigTitle=true
 * Wm8731 module audio module mcu fpga music https://aliexpress.com/item/FREE-SHIPPING-Wm8731-module-audio-module-mcu-fpga-music/1674210328.html?spm=a2g0s.8937460.0.0.meWV7T
 * UDA1380 Based on I2S Interface https://aliexpress.com/item/UDA1380-Board-UDA-1380-Module-Stereo-Audio-Codecs-Decoder-Based-on-I2S-Interface/700622589.html?spm=a2g03.10010108.1000016.1.3c744047Zan6Wc&isOrigTitle=true
 * Chinese USB
 * Mini USB DAC PCM2704 https://aliexpress.com/store/product/Newest-Raspberry-Pi-Audio-Mini-USB-DAC-PCM2704-high-quality-sound-card-with-Texas-Instruments/113442_1880987504.html